lawrence



E. LAWRENCE.

(No Model.) 2 Sheets-Shem 1.

LAMP BURNER. No. 319,272. Patented June 2, 1885.

WITNESSES INVENTOR BYm ATTORNEYS.

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(No Model.) 2 Sheets--Sl1eet 2. E. LAWRENCE.

LAMP BURNER.

No. 319,272. Patented June 2, 1885.

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EDWIN LAWRENCE, or BROOKLYN, NEW YORK.

LAMP-BURNER.

SPECIFICATION forming part of Letters Patent No. 319,272, dated June 2,1885.

Application filed March 31, 1884. (No model.)

ToalZ whom it may concern:

Be it known that I, EDWIN LAWRENCE, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in LampBurners, of which the following is a description.

This invention relates to that class of oillamps which use annular burners supplied with air from the interior. Heretofore such lamps have usually had a tube vertically through the lamp-body to admit air to the interior of the flame, and the burner was consequently a portion of the lamp-body.

The object of my invention is to provide an annular burner which will admit air to its interior from below without a tube through the lamp, to adapt an annular burner that may be screwed into the body of a lamp like a flatwick burner, and to control the size of the blaze without raising or lowering any part of the wick.

To this end my invention consists in the constructionand combination of parts forming a lamp-burner, hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is an elevation of my lamp-burner.

Fig. 2 is a vertical section, and Fig. 3 is a horizontal section at av 00 of Fig. 2. Fig. 4is a section of one-half the burner at y y of Fig. 2, a portion of the wick being broken out to show the wick-tube D to be a segment of a cylindrical ring. Fig. 5 is a vertical section of the upper or movable portion of the burner; and Fig. 6 is a vertical section, part broken away, of the lower orstationary portion of the burner.

A represents the body of the burner, which screws at a into the lamp in a manner similar to the common flat-tube oil-burners.

B represents a common chimney-holder; but it is secured to the body A by different means from usual, as hereinafter explained.

G is the trumpetshaped piece for spreading the blaze.

D D are two tubes, which hold soft wicks E, of any fibrous material, such as the common cotton wicking. These tubes are arcs of a circle, each secured to and opening through the top bof the body A, and the two join above the horizontal floor c, becoming a complete circle or annular tube, F, bounded by the outer tube (1 and the inner tube e. The soft fibrous wick E, filling the side tubes, D, rises into the annular tube F, and isthen spread across the floors c, to form a complete circular wick. Above this wick, and in contact with it, I place an incombustible wick, G, made of asbestus or some equivalent mineral substance. This wick G, I make to stand above the top of the tube F enough to furnish all the evaporating or burning surface that will ever be required to form the largest blaze that this burner is capable of. Both wicks E and G are immovable when once in place, no provision being made to raise or lower them.

To regulate the size of the blaze, ll adapt another annular tube, H, consisting of the inner tube f and outer tube to telescope with the tube F, and to, be raised or lowered at will by means of the hand-knob I. This knob and the spur-wheel K are both secured to a shaft, L, which is journaled in the outer shell, M, which is secured to the tube 9. N is a toothed rack secured to the body A and engaged by the spur-Wheel K. The chimney-holder B is removably secured to the tube 9, and the flamespreader G is screwed into a cross-piece, h, secured to the tube j, which is permanently connected with tube 9. When the knob I is revolved, the spur-wheel K is caused to travel up or down the rack N, thereby raising or low ering the tube H to choke or to spread the blaze; also raising or lowering the spreader O to keep it in a fixed relation to the tube H, and raising or lowering the whole outer shell and the chimney'supported thereon. This does not act like the burners which raise and lower their wicks. They permit more or less of the wick to burn by being raised or lowered. While mine always allows the same burningsurface of wick to be exposed, the raising or lowering of its surrounding tube H merely acts on the blaze to choke it or to. spread it. The air is admitted to the interior of the tube f through theside passages, i, left between the two tubes D. It may be admitted to these passages through innumerable perforations or through large apertures in the outer shell, M. 1? represents springs acting between the shell M and tubes D, to cause friction to maintain the shell at any height where it may be left.

' the wick-tube or outside of the wick-tube are not new, and I do not claim the same; but I am not aware that annular wick-tubes have before been provided with both outside and inside tubes forming an adjustable annular shield to the wick to regulate the flame.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The body A, having the screw tubes D, terminati ng in the annular tube F,

as and for thepurpose specified.

a, and the vjournaled in the shell M, and the rack N, se-

cured to the body A, as and for the purpose specified.

3. The combination, with the body A and the tube F, fixed thereto, and the tubes f and g, adapted to be raised and lowered, substantially as described, of the spreader 0, attached to the tubes f and g, as and for the purpose specified.

The above specification of my invention signed by me in the presence of twosubscrib-E ing witnesses;

EDWIN LAWRENCE.

Witnesses:

W. X. STEVENS, SoLoN O. KEMON. 

